package com.wind.聚合数据;

import net.sf.json.JSONObject;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

/**
 *地图坐标服务调用示例代码 － 聚合数据
 *在线接口文档：http://www.juhe.cn/docs/32
 **/

public class MapDemo {
  public static final String DEF_CHATSET = "UTF-8";
  public static final int DEF_CONN_TIMEOUT = 30000;
  public static final int DEF_READ_TIMEOUT = 30000;
  public static String userAgent =  "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36";

  //配置您申请的KEY
  public static final String APPKEY ="a0efe0c2a23d30f7f3b93b45cd42984b0913";

  //1.经纬度转换
  public static void getRequest1(){
    String result =null;
    String url ="http://v.juhe.cn/offset/index";//请求接口地址
    Map params = new HashMap();//请求参数
    params.put("lng","107.62173");//经度,如：116.3974965092
    params.put("lat","34.44378");//纬度,如：39.908700982285396
    params.put("type","1");//转换类型，1：GPS->百度， 2: 百度->GPS ，3:GPS->谷歌， 4:谷歌->GPS<br/>     5:百度->谷歌 ，6:谷歌->百度
    // params.put("dtype","");//返回数据格式：json或xml或jsonp,默认json
    // params.put("callback","");//返回格式选择jsonp时，必须传递
    params.put("key",APPKEY);//你申请的key

    try {
      result =net(url, params, "GET");
      JSONObject object = JSONObject.fromObject(result);
      System.out.println(object);
      if(object.getInt("error_code")==0){
        System.out.println(object.get("result"));
      }else{
        System.out.println(object.get("error_code")+":"+object.get("reason"));
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }



  public static void main(String[] args) {
    getRequest1();
  }

  /**
   *
   * @param strUrl 请求地址
   * @param params 请求参数
   * @param method 请求方法
   * @return  网络请求字符串
   * @throws Exception
   */
  public static String net(String strUrl, Map params,String method) throws Exception {
    HttpURLConnection conn = null;
    BufferedReader reader = null;
    String rs = null;
    try {
      StringBuffer sb = new StringBuffer();
      if(method==null || method.equals("GET")){
        strUrl = strUrl+"?"+urlencode(params);
      }
      URL url = new URL(strUrl);
      conn = (HttpURLConnection) url.openConnection();
      if(method==null || method.equals("GET")){
        conn.setRequestMethod("GET");
      }else{
        conn.setRequestMethod("POST");
        conn.setDoOutput(true);
      }
      conn.setRequestProperty("User-agent", userAgent);
      conn.setUseCaches(false);
      conn.setConnectTimeout(DEF_CONN_TIMEOUT);
      conn.setReadTimeout(DEF_READ_TIMEOUT);
      conn.setInstanceFollowRedirects(false);
      conn.connect();
      if (params!= null && method.equals("POST")) {
        try {
          DataOutputStream out = new DataOutputStream(conn.getOutputStream());
          out.writeBytes(urlencode(params));
        } catch (Exception e) {
          // TODO: handle exception
        }
      }
      InputStream is = conn.getInputStream();
      reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
      String strRead = null;
      while ((strRead = reader.readLine()) != null) {
        sb.append(strRead);
      }
      rs = sb.toString();
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      if (reader != null) {
        reader.close();
      }
      if (conn != null) {
        conn.disconnect();
      }
    }
    return rs;
  }

  //将map型转为请求参数型
  public static String urlencode(Map<String,Object>data) {
    StringBuilder sb = new StringBuilder();
    for (Map.Entry i : data.entrySet()) {
      try {
        sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue()+"","UTF-8")).append("&");
      } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
      }
    }
    return sb.toString();
  }
}